75458711 ÷ 159 
The aim is to understand the frequency of 159 in 75458711.

Step 1:
If we divide 7 by 159, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 159

On to step 2:
When dividing 75 by 159, we get 0 with a remainder of 75.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Fetch the next digit (4) from the dividend, attach it to 75 and continue: 754 / 159

Step 3:
When dividing 754 by 159, we get 4 with a remainder of 118.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 636 from 754 and we're left with 118.
Grab the next digit (5) from the dividend, add it to 118, then carry on: 1185 / 159

Advancing to step 4:
159 can be fit into 1185 7 times, resulting in a remainder of 72.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
The remainder is 72 after subtracting 1113 from 1185.
Grab the next digit (8) from the dividend, add it to 72, then carry on: 728 / 159

Moving on to step 5:
If we divide 728 by 159, we get 4 and a remainder of 92.
The next digit of our result is 4. 
Result so far: 474.0
If we take 636 away from 728, we end up with 92.
Append the next digit (7) from the dividend to 92 and continue with: 927 / 159

Step 6:
927 divided by 159 is 5 with a remainder of 132.
Use 5 as the next digit of our solution. 
Result so far: 4745.0
If we take 795 away from 927, we end up with 132.
Bring next digit (1) of the dividend behind the 132 and repeat the process: 1321 / 159

Step 7:
1321 divided by 159 is 8 with a remainder of 49.
Record the quotient 8 as the next digit in the result. 
Result so far: 47458.0
Deduct 1272 from 1321 and we're left with 49.
Include the next digit (1) from the dividend after 49, then repeat: 491 / 159

On to step 8:
When dividing 491 by 159, we get 3 with a remainder of 14.
The next digit of our result is 3. 
Result so far: 474583.0
Deduct 477 from 491 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 9:
159 can be fit into 140 0 times, resulting in a remainder of 140.
The next digit of our result is 0. 
Result so far: 474583.0
Subtract 0 from 140 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 10:
When dividing 1400 by 159, we get 8 with a remainder of 128.
The number 8 becomes the next digit in our result. 
Result so far: 474583.08
Deduct 1272 from 1400 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 11:
1280 divided by 159 is 8 with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 474583.088
Deduct 1272 from 1280 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 474583.088, and the remainder is 0.0008.